package com.book.items.composite;

import java.io.Serializable;

public class AbstractProductItem implements Serializable {

    // 增加商品类目
    protected void addProductItem(AbstractProductItem item) {
        throw new UnsupportedOperationException("Not Support child add");
    }

    protected void delProductItem(AbstractProductItem item) {
        throw new UnsupportedOperationException("Not Support child remove");
    }


}
